Java Threads Part II

1. Java ThreadsPart II

2. Lecture Objectives • To understand the concepts of multithreading in Java • To be able to develop simple multithreaded applications in Java

3. The Runnable Interface • Another way to create a thread is to have a class implement the Runnable interface • The Runnable interface has one method heading: public void run(); • A class that implements Runnable must still be run from an instance of Thread • This is usually done by passing the Runnable object as an argument to the thread constructor

4. The Runnable Interface: An Outline public class ClassToRun extends SomeClass implements Runnable { . . . public void run() { // Fill this as if ClassToRun // were derived from Thread } . . . public void startThread() { Thread theThread = new Thread(this); theThread.run(); } . . . }

5. The Runnable Interface: An Example

6. The Runnable Interface: An Example (Cont’d)

7. The Runnable Interface: An Example (Cont’d)

8. The Runnable Interface: An Example (Cont’d)

9. The Runnable Interface: An Example (Cont’d)